【英文标准名称】:Technicaldrawings-Generalprinciplesofpresentation-Part25:linesonshipbuildingdrawings.
【原文标准名称】:技术图纸.表示方法的一般原则.第25部分:造船图上的直线
【标准号】:NFE04-524-5-2002
【标准状态】:现行
【国别】:法国
【发布日期】:2002-09-01
【实施或试行日期】:2002-09-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;直线;应用规则;图形表示;直线厚度;基本法规;编写;文献;工程图;船体;表示法;产品文件;名称与符号;使用;符号表示;;图纸;基础;造船
【英文主题词】:
【摘要】:
【中国标准分类号】:U04
【国际标准分类号】:01_100_01;47_020_01
【页数】:14P;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodsforMinimumIndexDensityandUnitWeightofSoilsandCalculationofRelativeDensity
【原文标准名称】:土壤最低标准密度和单位重量与相对密度计算的标准试验方法
【标准号】:ASTMD4254-2000(2006)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:minimumindexdensity;minimumindexunitweight;relativedensity;Cohesionlesssoil;Compactionmeasurement--soils;Density--soil/rock/relatedmaterials
【摘要】:Thedensity/unitweightofacohesionlesssoilmaybedeterminedbyvariousin-placemethodsinthefieldorbythemeasurementofphysicaldimensionsandmassesbylaboratorysoilspecimens.Thedrydensity/unitweightofacohesionlesssoildoesnotnecessarily,byitself,revealwhetherthesoilislooseordense.Relativedensity/unitweightexpressesthedegreeofcompactnessofacohesionlesssoilwithrespecttotheloosestanddensestconditionasdefinedbystandardlaboratoryprocedures.Onlywhenviewedagainstthepossiblerangeofvariation,intermsofrelativedensity/unitweight,canthedrydensity/unitweightberelatedtothecompactioneffortusedtoplacethesoilinacompactedfillorindicatevolumechangeandstress-straintendenciesofsoilwhensubjectedtoexternalloading.Anabsoluteminimumdensity/unitweightisnotnecessarilyobtainedbythesetestmethods.Note18212;Inaddition,therearepublisheddatatoindicatethatthesetestmethodshaveahighdegreeofvariability.However,thevariabilitycanbegreatlyreducedbycarefulcalibrationofequipment,andcarefulattentiontopropertestprocedureandtechnique.Theuseofthestandardmolds(6.3.1)hasbeenfoundtobesatisfactoryformost1.1Thesetestmethodscoverthedeterminationoftheminimum-indexdrydensity/unitweightofcohesionless,free-drainingsoils.Theadjectivex201C;dryx201D;beforedensityorunitweightisomittedinthetitleandremainingportionsofthisstandardstobebeconsistentwiththeapplicabledefinitionsgiveninSection3onTerminology.1.2Systemofunits:1.2.1Thetestingapparatusdescribedinthisstandardhasbeendevelopedandmanufacturedusingvaluesinthegravimetricorinch-poundsystem.Therefore,testapparatusdimensionsandmassgivenininch-poundunitsareregardedasthestandard.1.2.2Itiscommonpracticeintheengineeringprofessiontoconcurrentlyusepoundstorepresentbothaunitofmass(lbm)andaunitofforce(lbf).Thisimplicitlycombinestwoseparatesystemsofunits;thatis,theabsolutesystemandthegravitationalsystem.Itisscientificallyundesirabletocombinetheuseoftwoseparatesetsofinch-poundunitswithinasinglestandard.Thistestmethodhasbeenwrittenusingthegravitationalsystemofunitswhendealingwiththeinch-poundsystem.Inthissystem,thepound(lb
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:9P.;A4
【正文语种】:英语